漫游猫认证
1.相对分质量=(14+4)X2+32+16X4=1322.物质中各元素质量比是m(N):m(H):m(S):m(O)=14X2:4X2:32:16X4=7:2:8:163.W(N)%=2X14/132=21.21%4.m(N)=W(N)%X100=21.21%X100=21.21g